Method of forming an explosion proof contact assembly

Details Method of forming an explosion proof contact assembly Method of forming an explosion proof contact assembly

1979-06-05

1981-04-14

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

264272, 264275, H01R 4300

Patent

active

042611008

ABSTRACT:
A method of making an explosion proof contact assembly and the resulting contact assembly are described wherein the electrical contacts are first rigidly mounted on a contact unit or sub-assembly prior to the molding operation. This approach allows complete assembly of the contacts prior to molding of the contact unit within the insulating body, while maintaining required flame path for explosion proof atmospheres. The present invention eliminates post-molding assembly operations which are extremely difficult and substantially raise the cost of producing the contact assemblies.

REFERENCES:
patent: 3281560 (1966-10-01), Nava
patent: 3406374 (1968-10-01), Martin
patent: 3723724 (1973-03-01), Appleton

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